01ba292b9f
This is a rather large commit that includes all of the following: - React UI with code editor, runtime renderer and input-output panes - Language providers for a sample language and Brainfuck - Implementation of code execution in a web worker - All-at-once unabortable execution of program fully functional
34 lines
996 B
TypeScript
34 lines
996 B
TypeScript
import { TextArea } from "@blueprintjs/core";
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/**
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* For aesthetic reasons, we use readonly textarea for displaying output.
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* Textarea displays placeholder if value passed is empty string, which is undesired.
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* This function is a fake-whitespace workaround.
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*
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* @param value Value received from parent. Placeholder shown on `null`.
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* @returns Value to pass as prop to Blueprint TextArea
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*/
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const toTextareaValue = (value: string | null): string | undefined => {
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if (value == null) return undefined; // Placeholder shown
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if (value === "") return "\u0020"; // Fake whitespace to hide placeholder
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return value; // Non-empty output value
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};
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type Props = {
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value: string | null;
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};
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export const OutputViewer = ({ value }: Props) => {
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return (
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<TextArea
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fill
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large
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readOnly
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growVertically
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value={toTextareaValue(value)}
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placeholder="Run code to see output..."
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style={{ height: "100%", resize: "none", boxShadow: "none" }}
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/>
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);
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};
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